Twenty-five cases of dermatophytid were histopathologically and histochemically examined as to types of it. These were divided into six types, that is, macula-papular-, erythema multiforme-, erythema centrifugum-, lichen trichophyticus-, disidrotic- and papulo-necrotic types. The most characteristic finding common to these types was involvement of the vascular-collagenous connective tissue and the epidermis, superficial-and deep dermal layers, and hair follicle were also involved.
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